Table 1.
Results of the lab based protocols
| Subject Age (Gender) |
Muscle Fat (%) | Mean (sd) MTR* | Plantar Flexor CAR† |
Neck Disability Index % Score (Time)§ |
Head Rotation/ Position at Impact¶ |
||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Neck | Legs‡ | Spinal Cord C5 | |||||||||
| Right | Left | Total | Ventral | Right | Left | Dorsal | |||||
| Severe 42 (M) | 30 | 20.9 | 12.0 | 16.5 | 38.93 (1.90) | 25.95 (0.71) | 47.18 (1.01) | 27.02 (2.80) | 0.62 | 62 (36 months) | Left |
| Severe 41 (F) | 29 | 15.2 | 15.8 | 14.6 | 32.42 (1.30) | 42.84 (0.75) | 39.98 (1.17) | 28.44 (0.74) | 0.58 | 68 (48 months) | Straight |
| Severe 27 (F) | 31 | 15.2 | 14.5 | 15.9 | 31.67 (2.63) | 40.64 (0.41) | 21.98 (1.19) | 29.98 (0.64) | 0.62 | 48 (3.5 months) | Right |
| Recovered 28 (F) | 10.5 | 7.4 | 7.2 | 7.6 | 38.79 (1.33) | 45.38 (3.51) | 42.55 (0.88) | 43.65 (0.99) | 1.00 | 4 (3 months) | Straight |
*
Reductions relative to one another suggest degeneration in specific regions of the cervical spinal cord.
†
Lower CAR values suggest reductions in volitional torque production.
‡
Total muscle fat in legs = right and left values of plantar- and dorsiflexors combined.
§
Elapsed time since MVC.
¶
Subjective report from the patient involved in rear-end impact.
MTR = magnetization transfer ratio; CAR = central activation ratio; MVC = motor vehicle collision.